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Q. What is compound?
A compound is a substance which consists of two or more elements chemically combined. The elements in a compound aren't simply mingled together as they are in a mixture. In its place they are combined in a way such that the compound has properties that are different from those of the elements of which it is composed. Every compound is represented by a formula a combination of the symbols of the elements that make up the compounds. You may already recognize some chemical formulas such as H2O for water, NaCl for table salt and NH3 for ammonia.
Antiseptics doesn''t harm living cells whereas disinfectants harm living cells.and disinfectants are used to sterilize instruments and utensils but cant be used on skin....and the
The new development in advance enzymology
Drying - Chemical Properties of oils and fats Some fixed type of oils, containing glycerides of unsaturated fatty acids comprising two or three double bonds have the trend of s
Which of the following represents the electronic configuration of an element with atomic number 17: (1) 1s 2, 2s 2 , 2p 6 , 3s 1, 3p 6 (2) 1s 2 , 2s 2 , 2p
Properties of Bi-phenyl - Hydrocarbon Bi-phenyl is a colourless solid, melting point 71°C. It goes through usual electrophilic replacement reactions. As aryl set are electron w
what are atoms made of ?
Methane (CH4), or natural gas, is commonly used all over the world as a source of energy and fuel. Many homes in the United States combust methane to generate heat for hot water he
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why water molecule forms covalent bond even though it dissociates into ions
The electronic configuration 1s 2 , 2s 2 , 2p 1 x , 2p 1 z : (1) Oxygen (2) Nitrogen (3) Hydrogen (4) Fluorine Ans: Nitrogen
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